$ git clone -n https://src.fedoraproject.org/rpms/kf5-kcoreaddons.git /var/lib/mock/f39-build-1579179-38015/root/chroot_tmpdir/scmroot/kf5-kcoreaddons
Cloning into '/var/lib/mock/f39-build-1579179-38015/root/chroot_tmpdir/scmroot/kf5-kcoreaddons'...
$ git fetch origin 6954e12e8174e6b5c363cca1c535b4316d39a648:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kcoreaddons
 * [new ref]         6954e12e8174e6b5c363cca1c535b4316d39a648 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6954e12 5.111.0