$ git clone -n https://src.fedoraproject.org/rpms/kcron.git /var/lib/mock/f40-build-1949315-25186/root/chroot_tmpdir/scmroot/kcron
Cloning into '/var/lib/mock/f40-build-1949315-25186/root/chroot_tmpdir/scmroot/kcron'...
$ git fetch origin 32e8b5757205cfd4b9df9912e2a543bff9c33c6c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kcron
 * [new ref]         32e8b5757205cfd4b9df9912e2a543bff9c33c6c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 32e8b57 24.05.2