$ git clone -n https://src.fedoraproject.org/rpms/rust-flagset.git /var/lib/mock/f40-build-2061852-49167/root/chroot_tmpdir/scmroot/rust-flagset
Cloning into '/var/lib/mock/f40-build-2061852-49167/root/chroot_tmpdir/scmroot/rust-flagset'...
$ git fetch origin d64fc4c2e13fd172add354bc3568b7918e39c882:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-flagset
 * [new ref]         d64fc4c2e13fd172add354bc3568b7918e39c882 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d64fc4c Update to version 0.4.4; Fixes RHBZ#2238196