$ git clone -n https://src.fedoraproject.org/rpms/xorg-x11-drv-qxl.git /var/lib/mock/f45-build-39012-731/root/chroot_tmpdir/scmroot/xorg-x11-drv-qxl
Cloning into '/var/lib/mock/f45-build-39012-731/root/chroot_tmpdir/scmroot/xorg-x11-drv-qxl'...
$ git fetch origin 0a9b17d73d8038a8f0ff8207986beedca29f4dfa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xorg-x11-drv-qxl
 * [new ref]         0a9b17d73d8038a8f0ff8207986beedca29f4dfa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a9b17d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild