$ git clone -n https://src.fedoraproject.org/rpms/corectrl.git /var/lib/mock/f39-build-1591832-38299/root/chroot_tmpdir/scmroot/corectrl
Cloning into '/var/lib/mock/f39-build-1591832-38299/root/chroot_tmpdir/scmroot/corectrl'...
$ git fetch origin 4dbd6e8c0009a63f5e766e7bb98c6098f41adac3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/corectrl
 * [new ref]         4dbd6e8c0009a63f5e766e7bb98c6098f41adac3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4dbd6e8 [packit] 1.3.8 upstream release