$ git clone -n https://src.fedoraproject.org/rpms/kf5-kholidays.git /var/lib/mock/f39-build-2181922-51220/root/chroot_tmpdir/scmroot/kf5-kholidays
Cloning into '/var/lib/mock/f39-build-2181922-51220/root/chroot_tmpdir/scmroot/kf5-kholidays'...
$ git fetch origin acf49b37b20ddf83357ed16b413aae038bd41833:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kholidays
 * [new ref]         acf49b37b20ddf83357ed16b413aae038bd41833 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at acf49b3 5.113.0