$ git clone -n https://src.fedoraproject.org/rpms/kf5-kimageformats.git /var/lib/mock/f40-build-786950-134636/root/chroot_tmpdir/scmroot/kf5-kimageformats
Cloning into '/var/lib/mock/f40-build-786950-134636/root/chroot_tmpdir/scmroot/kf5-kimageformats'...
$ git fetch origin ae98d86711724aec4b6b3d1ab1e922c830906f37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kimageformats
 * [new ref]         ae98d86711724aec4b6b3d1ab1e922c830906f37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae98d86 5.115.0