$ git clone -n https://src.fedoraproject.org/rpms/qtchooser.git /var/lib/mock/f45-build-34165-679/root/chroot_tmpdir/scmroot/qtchooser
Cloning into '/var/lib/mock/f45-build-34165-679/root/chroot_tmpdir/scmroot/qtchooser'...
$ git fetch origin 9789d5d4cdac2f77c9d9ef52f15fd0708f22ec26:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qtchooser
 * [new ref]         9789d5d4cdac2f77c9d9ef52f15fd0708f22ec26 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9789d5d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild