$ git clone -n https://src.fedoraproject.org/rpms/gnome-pkg-tools.git /var/lib/mock/f45-build-11477-432/root/chroot_tmpdir/scmroot/gnome-pkg-tools
Cloning into '/var/lib/mock/f45-build-11477-432/root/chroot_tmpdir/scmroot/gnome-pkg-tools'...
$ git fetch origin 8ff07ef6dd35ad6d9540c7eb605faa06ad292b6a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-pkg-tools
 * [new ref]         8ff07ef6dd35ad6d9540c7eb605faa06ad292b6a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ff07ef Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild