$ git clone -n https://src.fedoraproject.org/rpms/xml-maven-plugin.git /var/lib/mock/f38-build-side-42-init-devel-1263310-30643/root/chroot_tmpdir/scmroot/xml-maven-plugin
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1263310-30643/root/chroot_tmpdir/scmroot/xml-maven-plugin'...
$ git fetch origin 9d1d669d0e1e37374fde2243728ad3bbab157ff5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xml-maven-plugin
 * [new ref]         9d1d669d0e1e37374fde2243728ad3bbab157ff5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d1d669 Convert to %autorelease and %autochangelog