$ git clone -n https://src.fedoraproject.org/rpms/rust-escargot.git /var/lib/mock/f40-build-2712534-72016/root/chroot_tmpdir/scmroot/rust-escargot
Cloning into '/var/lib/mock/f40-build-2712534-72016/root/chroot_tmpdir/scmroot/rust-escargot'...
$ git fetch origin dfbebf15556f9828c0d24e696a9a87cceb14521a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-escargot
 * [new ref]         dfbebf15556f9828c0d24e696a9a87cceb14521a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dfbebf1 Update to version 0.5.9; Fixes RHBZ#2263538