$ git clone -n https://src.fedoraproject.org/rpms/rust-plist.git /var/lib/mock/f39-build-1901149-42855/root/chroot_tmpdir/scmroot/rust-plist
Cloning into '/var/lib/mock/f39-build-1901149-42855/root/chroot_tmpdir/scmroot/rust-plist'...
$ git fetch origin 873fffb688e3258890b911d03c7a7a1c77e2bde5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-plist
 * [new ref]         873fffb688e3258890b911d03c7a7a1c77e2bde5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 873fffb Update to version 1.6.0; Fixes RHBZ#2247934