$ git clone -n https://src.fedoraproject.org/rpms/rust-astral-pubgrub.git /var/lib/mock/f45-build-40228-769/root/chroot_tmpdir/scmroot/rust-astral-pubgrub
Cloning into '/var/lib/mock/f45-build-40228-769/root/chroot_tmpdir/scmroot/rust-astral-pubgrub'...
$ git fetch origin 52cfe6f3b995df325fd50c4cd83839bda54f4913:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-astral-pubgrub
 * [new ref]         52cfe6f3b995df325fd50c4cd83839bda54f4913 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52cfe6f Update to version 0.6.1; Fixes RHBZ#2512490