$ git clone -n https://src.fedoraproject.org/rpms/crossguid.git /var/lib/mock/f45-build-5711-341/root/chroot_tmpdir/scmroot/crossguid
Cloning into '/var/lib/mock/f45-build-5711-341/root/chroot_tmpdir/scmroot/crossguid'...
$ git fetch origin 058e1a5dabe87a530efa0e8e2dbb6ad20d579949:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crossguid
 * [new ref]         058e1a5dabe87a530efa0e8e2dbb6ad20d579949 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 058e1a5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild