$ git clone -n https://src.fedoraproject.org/rpms/rust-pmac.git /var/lib/mock/f38-build-side-43-rust-devel-1418974-31459/root/chroot_tmpdir/scmroot/rust-pmac
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1418974-31459/root/chroot_tmpdir/scmroot/rust-pmac'...
$ git fetch origin 10b16c1ecbdf61090b4056157394ee5bd2e45117:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pmac
 * [new ref]         10b16c1ecbdf61090b4056157394ee5bd2e45117 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10b16c1 Initial import (#2214383)