$ git clone -n https://src.fedoraproject.org/rpms/rust-domain.git /var/lib/mock/f40-build-2092028-50257/root/chroot_tmpdir/scmroot/rust-domain
Cloning into '/var/lib/mock/f40-build-2092028-50257/root/chroot_tmpdir/scmroot/rust-domain'...
$ git fetch origin 2fcc5cfa1d4f9e509c778bc47e753515d1d34b32:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-domain
 * [new ref]         2fcc5cfa1d4f9e509c778bc47e753515d1d34b32 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2fcc5cf Update to 0.9.2 (#2244798)