$ git clone -n https://src.fedoraproject.org/rpms/rust-enumset_derive.git /var/lib/mock/f39-build-1534280-36233/root/chroot_tmpdir/scmroot/rust-enumset_derive
Cloning into '/var/lib/mock/f39-build-1534280-36233/root/chroot_tmpdir/scmroot/rust-enumset_derive'...
$ git fetch origin 8da789a1c92486f23528a12fd353ad6e10aa8c69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-enumset_derive
 * [new ref]         8da789a1c92486f23528a12fd353ad6e10aa8c69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8da789a Update to version 0.8.1; Fixes RHBZ#2207945