$ git clone -n https://src.fedoraproject.org/rpms/copr-selinux.git /var/lib/mock/f45-build-4985-336/root/chroot_tmpdir/scmroot/copr-selinux
Cloning into '/var/lib/mock/f45-build-4985-336/root/chroot_tmpdir/scmroot/copr-selinux'...
$ git fetch origin 57b4fc0c9a1e729537359e289d45c3ff2d7b3126:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/copr-selinux
 * [new ref]         57b4fc0c9a1e729537359e289d45c3ff2d7b3126 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57b4fc0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild