$ git clone -n https://src.fedoraproject.org/rpms/rust-async-compression.git /var/lib/mock/f45-build-40268-770/root/chroot_tmpdir/scmroot/rust-async-compression
Cloning into '/var/lib/mock/f45-build-40268-770/root/chroot_tmpdir/scmroot/rust-async-compression'...
$ git fetch origin 81a54183c58873dc4f2dda9a3b67dd397dab861b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-compression
 * [new ref]         81a54183c58873dc4f2dda9a3b67dd397dab861b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81a5418 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild