$ git clone -n https://src.fedoraproject.org/rpms/rust-yubibomb.git /var/lib/mock/f38-build-side-42-init-devel-1396023-31050/root/chroot_tmpdir/scmroot/rust-yubibomb
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1396023-31050/root/chroot_tmpdir/scmroot/rust-yubibomb'...
$ git fetch origin d275ae60d0e1ce9255ea39cf40b22febcaa0cbb0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-yubibomb
 * [new ref]         d275ae60d0e1ce9255ea39cf40b22febcaa0cbb0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d275ae6 Update to version 0.2.14; Fixes RHBZ#2240394