To upload the coverage to the correct commit in Teamscale, add a git.properties file to your jar/war. Depending on your environment there are multiple options:

Just add the following plugin to your build:

<build>
    <plugins>
		<plugin>
			<groupId>io.github.git-commit-id</groupId>
			<artifactId>git-commit-id-maven-plugin</artifactId>
			<version>9.0.1</version>
			<executions>
				<execution>
					<id>get-the-git-infos</id>
					<goals>
						<goal>revision</goal>
					</goals>
					<phase>initialize</phase>
				</execution>
			</executions>
			<configuration>
				<generateGitPropertiesFile>true</generateGitPropertiesFile>
			</configuration>
		</plugin>
    </plugins>
</build>