$ git clone -n https://src.fedoraproject.org/rpms/astrometry.git /var/lib/mock/f40-build-791386-137477/root/chroot_tmpdir/scmroot/astrometry
Cloning into '/var/lib/mock/f40-build-791386-137477/root/chroot_tmpdir/scmroot/astrometry'...
$ git fetch origin 2ff0bdde1cd77aa74863f3d3789314051752c9b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/astrometry
 * [new ref]         2ff0bdde1cd77aa74863f3d3789314051752c9b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ff0bdd Rebuild for libwcs soname after mass rebuild