$ git clone -n https://src.fedoraproject.org/rpms/rust-coreutils.git /var/lib/mock/f41-build-835375-158566/root/chroot_tmpdir/scmroot/rust-coreutils
Cloning into '/var/lib/mock/f41-build-835375-158566/root/chroot_tmpdir/scmroot/rust-coreutils'...
$ git fetch origin 7ca26bcc716163b1f9feb7f963c65a2dc28e64fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-coreutils
 * [new ref]         7ca26bcc716163b1f9feb7f963c65a2dc28e64fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ca26bc Use script to generate list of coreutils commands