$ git clone -n https://src.fedoraproject.org/rpms/kf5-kbookmarks.git /var/lib/mock/f45-build-14818-464/root/chroot_tmpdir/scmroot/kf5-kbookmarks
Cloning into '/var/lib/mock/f45-build-14818-464/root/chroot_tmpdir/scmroot/kf5-kbookmarks'...
$ git fetch origin 0d53e7f39e4d11b606057ad579cc90ef3e9e68a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kbookmarks
 * [new ref]         0d53e7f39e4d11b606057ad579cc90ef3e9e68a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d53e7f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild