$ git clone -n https://src.fedoraproject.org/rpms/rust-widestring.git /var/lib/mock/f39-build-1572797-37792/root/chroot_tmpdir/scmroot/rust-widestring
Cloning into '/var/lib/mock/f39-build-1572797-37792/root/chroot_tmpdir/scmroot/rust-widestring'...
$ git fetch origin 57ce51169f4cd8d6f92ed4af23e3b66465906b2d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-widestring
 * [new ref]         57ce51169f4cd8d6f92ed4af23e3b66465906b2d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57ce511 Initial import (#2241633)