$ git clone -n https://src.fedoraproject.org/rpms/rust-urlencoding.git /var/lib/mock/f38-build-side-42-init-devel-1394790-31050/root/chroot_tmpdir/scmroot/rust-urlencoding
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1394790-31050/root/chroot_tmpdir/scmroot/rust-urlencoding'...
$ git fetch origin 15d1fcb71ddc8ac1a36a225ba7f002dc20bcf4b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-urlencoding
 * [new ref]         15d1fcb71ddc8ac1a36a225ba7f002dc20bcf4b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15d1fcb Update to version 2.1.3; Fixes RHBZ#2224617