$ git clone -n https://src.fedoraproject.org/rpms/transmission-remote-gtk.git /var/lib/mock/f45-build-37391-714/root/chroot_tmpdir/scmroot/transmission-remote-gtk
Cloning into '/var/lib/mock/f45-build-37391-714/root/chroot_tmpdir/scmroot/transmission-remote-gtk'...
$ git fetch origin 2937dadc5f8995a5936af50e070da131fe53a0fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/transmission-remote-gtk
 * [new ref]         2937dadc5f8995a5936af50e070da131fe53a0fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2937dad Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild