$ git clone -n https://src.fedoraproject.org/rpms/rust-gsk4-sys.git /var/lib/mock/f40-build-2655750-66912/root/chroot_tmpdir/scmroot/rust-gsk4-sys
Cloning into '/var/lib/mock/f40-build-2655750-66912/root/chroot_tmpdir/scmroot/rust-gsk4-sys'...
$ git fetch origin d1c48737f813440c6bd2796a794e2585a44a3080:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gsk4-sys
 * [new ref]         d1c48737f813440c6bd2796a794e2585a44a3080 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d1c4873 Update to version 0.8.1; Fixes RHBZ#2262629