$ git clone -n https://src.fedoraproject.org/rpms/kphotoalbum.git /var/lib/mock/f40-build-2199826-51756/root/chroot_tmpdir/scmroot/kphotoalbum
Cloning into '/var/lib/mock/f40-build-2199826-51756/root/chroot_tmpdir/scmroot/kphotoalbum'...
$ git fetch origin f91cbc544d7e0d0e5dd8eb3c566ac1e9e7fe729a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kphotoalbum
 * [new ref]         f91cbc544d7e0d0e5dd8eb3c566ac1e9e7fe729a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f91cbc5 Upload 5.12.0 sources