$ git clone -n https://src.fedoraproject.org/rpms/transtats-cli.git /var/lib/mock/f41-build-side-1-3135056-39766/root/chroot_tmpdir/scmroot/transtats-cli
Cloning into '/var/lib/mock/f41-build-side-1-3135056-39766/root/chroot_tmpdir/scmroot/transtats-cli'...
$ git fetch origin 31ee3a720c2fbb8cf84633af8fd8f3817da65ab5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/transtats-cli
 * [new ref]         31ee3a720c2fbb8cf84633af8fd8f3817da65ab5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31ee3a7 Retired: https://pagure.io/releng/issue/12278