$ git clone -n https://src.fedoraproject.org/rpms/kontact.git /var/lib/mock/f39-build-1545520-36691/root/chroot_tmpdir/scmroot/kontact
Cloning into '/var/lib/mock/f39-build-1545520-36691/root/chroot_tmpdir/scmroot/kontact'...
$ git fetch origin bdc0eafd9f2a2da1f4950974d10054dc9c1a5c05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kontact
 * [new ref]         bdc0eafd9f2a2da1f4950974d10054dc9c1a5c05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdc0eaf 23.08.2