$ git clone -n https://src.fedoraproject.org/rpms/rust-quick-xml0.22.git /var/lib/mock/f39-build-2339901-59665/root/chroot_tmpdir/scmroot/rust-quick-xml0.22
Cloning into '/var/lib/mock/f39-build-2339901-59665/root/chroot_tmpdir/scmroot/rust-quick-xml0.22'...
$ git fetch origin 08a541878024b1b7a78ed1068c068e93ecdcbd1b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-quick-xml0.22
 * [new ref]         08a541878024b1b7a78ed1068c068e93ecdcbd1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 08a5418 compat package no longer needed