$ git clone -n https://src.fedoraproject.org/rpms/rust-dirs-sys0.3.git /var/lib/mock/f38-build-side-42-init-devel-1082951-29858/root/chroot_tmpdir/scmroot/rust-dirs-sys0.3
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1082951-29858/root/chroot_tmpdir/scmroot/rust-dirs-sys0.3'...
$ git fetch origin 73f825bbdd9dead2c68a0cbd3d526ede95fb016e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-dirs-sys0.3
 * [new ref]         73f825bbdd9dead2c68a0cbd3d526ede95fb016e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73f825b Initial import (dirs-sys 0.3 compat package)