$ git clone -n https://src.fedoraproject.org/rpms/rust-rust-stemmers.git /var/lib/mock/f45-build-44574-815/root/chroot_tmpdir/scmroot/rust-rust-stemmers
Cloning into '/var/lib/mock/f45-build-44574-815/root/chroot_tmpdir/scmroot/rust-rust-stemmers'...
$ git fetch origin 151b32765e14186a76f6543cf04ccee3ba4e5568:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rust-stemmers
 * [new ref]         151b32765e14186a76f6543cf04ccee3ba4e5568 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 151b327 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild