$ git clone -n https://src.fedoraproject.org/rpms/rust-basic-toml.git /var/lib/mock/f39-build-2216348-52490/root/chroot_tmpdir/scmroot/rust-basic-toml
Cloning into '/var/lib/mock/f39-build-2216348-52490/root/chroot_tmpdir/scmroot/rust-basic-toml'...
$ git fetch origin 23695120b1c88703e68fa3bced5e7a5352419a33:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-basic-toml
 * [new ref]         23695120b1c88703e68fa3bced5e7a5352419a33 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2369512 Update to version 0.1.8; Fixes RHBZ#2256493