$ git clone -n https://src.fedoraproject.org/rpms/rust-async-compression.git /var/lib/mock/f42-build-side-1-3514851-46092/root/chroot_tmpdir/scmroot/rust-async-compression
Cloning into '/var/lib/mock/f42-build-side-1-3514851-46092/root/chroot_tmpdir/scmroot/rust-async-compression'...
$ git fetch origin 8d560c44442023b07ef53933feb11a63c6c1a219:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-compression
 * [new ref]         8d560c44442023b07ef53933feb11a63c6c1a219 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d560c4 Update to version 0.4.19