$ git clone -n https://src.fedoraproject.org/rpms/rust-libcryptsetup-rs0.8.git /var/lib/mock/f39-build-1921467-42955/root/chroot_tmpdir/scmroot/rust-libcryptsetup-rs0.8
Cloning into '/var/lib/mock/f39-build-1921467-42955/root/chroot_tmpdir/scmroot/rust-libcryptsetup-rs0.8'...
$ git fetch origin f5df02e968a4530b79932be7afd07b16d3fe4b99:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libcryptsetup-rs0.8
 * [new ref]         f5df02e968a4530b79932be7afd07b16d3fe4b99 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5df02e Initial package