$ git clone -n https://src.fedoraproject.org/rpms/rust-enumflags2_derive.git /var/lib/mock/f40-build-2036157-48007/root/chroot_tmpdir/scmroot/rust-enumflags2_derive
Cloning into '/var/lib/mock/f40-build-2036157-48007/root/chroot_tmpdir/scmroot/rust-enumflags2_derive'...
$ git fetch origin cc0a26929988e8ee4b79a946c69607200399f217:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-enumflags2_derive
 * [new ref]         cc0a26929988e8ee4b79a946c69607200399f217 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc0a269 Update to version 0.7.8; Fixes RHBZ#2238859