$ git clone -n https://src.fedoraproject.org/rpms/rust-deltae.git /var/lib/mock/f39-build-1445063-32646/root/chroot_tmpdir/scmroot/rust-deltae
Cloning into '/var/lib/mock/f39-build-1445063-32646/root/chroot_tmpdir/scmroot/rust-deltae'...
$ git fetch origin 8bb944754936d845df34399ae1377c3ce357633d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-deltae
 * [new ref]         8bb944754936d845df34399ae1377c3ce357633d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8bb9447 Update to version 0.3.2; Fixes RHBZ#2225629