$ git clone -n https://src.fedoraproject.org/rpms/prometheus-simpleclient-java.git /var/lib/mock/f41-build-1276998-23150/root/chroot_tmpdir/scmroot/prometheus-simpleclient-java
Cloning into '/var/lib/mock/f41-build-1276998-23150/root/chroot_tmpdir/scmroot/prometheus-simpleclient-java'...
$ git fetch origin 10f63377032685fbc3cc36865777e9ca5f791b16:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/prometheus-simpleclient-java
 * [new ref]         10f63377032685fbc3cc36865777e9ca5f791b16 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10f6337 Orphaned for 6+ weeks