$ git clone -n https://src.fedoraproject.org/rpms/rust-selectors0.25.git /var/lib/mock/f45-build-44759-816/root/chroot_tmpdir/scmroot/rust-selectors0.25
Cloning into '/var/lib/mock/f45-build-44759-816/root/chroot_tmpdir/scmroot/rust-selectors0.25'...
$ git fetch origin 3df5e7aadb426500bd5f5de8441b5c705bccc439:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-selectors0.25
 * [new ref]         3df5e7aadb426500bd5f5de8441b5c705bccc439 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3df5e7a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild