$ git clone -n https://src.fedoraproject.org/rpms/rust-gufo-exif.git /var/lib/mock/f45-build-42231-791/root/chroot_tmpdir/scmroot/rust-gufo-exif
Cloning into '/var/lib/mock/f45-build-42231-791/root/chroot_tmpdir/scmroot/rust-gufo-exif'...
$ git fetch origin db18ecf8a457147f0fbd4d4c841e5f543d2c87c5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gufo-exif
 * [new ref]         db18ecf8a457147f0fbd4d4c841e5f543d2c87c5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db18ecf Update to version 0.5.0; Fixes RHBZ#2529500