$ git clone -n https://src.fedoraproject.org/rpms/tmt.git /var/lib/mock/f39-build-2013266-45864/root/chroot_tmpdir/scmroot/tmt
Cloning into '/var/lib/mock/f39-build-2013266-45864/root/chroot_tmpdir/scmroot/tmt'...
$ git fetch origin d22d55173390067986b43fb03efe6dcbe2b92654:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tmt
 * [new ref]         d22d55173390067986b43fb03efe6dcbe2b92654 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d22d551 [packit] 1.30.0 upstream release