$ git clone -n https://src.fedoraproject.org/rpms/xmonad.git /var/lib/mock/f45-build-38968-730/root/chroot_tmpdir/scmroot/xmonad
Cloning into '/var/lib/mock/f45-build-38968-730/root/chroot_tmpdir/scmroot/xmonad'...
$ git fetch origin 26e480ee4cd06478b8dbb17022d2a3332e584e24:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xmonad
 * [new ref]         26e480ee4cd06478b8dbb17022d2a3332e584e24 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26e480e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild