$ git clone -n https://src.fedoraproject.org/rpms/sextractor.git /var/lib/mock/f45-build-35835-699/root/chroot_tmpdir/scmroot/sextractor
Cloning into '/var/lib/mock/f45-build-35835-699/root/chroot_tmpdir/scmroot/sextractor'...
$ git fetch origin 7925176df78a817f509f793face4e942a82fcf21:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sextractor
 * [new ref]         7925176df78a817f509f793face4e942a82fcf21 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7925176 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild