$ git clone -n https://src.fedoraproject.org/rpms/rust-devicemapper.git /var/lib/mock/f39-build-1828328-41881/root/chroot_tmpdir/scmroot/rust-devicemapper
Cloning into '/var/lib/mock/f39-build-1828328-41881/root/chroot_tmpdir/scmroot/rust-devicemapper'...
$ git fetch origin 16ac3d13d651df294e51adb5a8e11317ece7d639:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-devicemapper
 * [new ref]         16ac3d13d651df294e51adb5a8e11317ece7d639 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 16ac3d1 Update to version 0.34.0